Yamaha WR450F 6.6gal Acerbis Gas Tank, fits 2003 thru 2006 bikes. The color is 'natural', which allows you to see your fuel level. Tanks is brand new, bought it for my bike, never even put it on and sold the bike. Never any gas in it, all parts required to install it are included. Here's a link to the tank - http://justgastanks.com/product_info.php?products_id=348 New these cost $350-400. Located in Fruita, CO. Prefer dealing with locals, don't really want to ship. Price is $250 PM me if you're interested!